CN103350554B - A kind of convection gas shears the method peeling off two-dimensional layer material - Google Patents
A kind of convection gas shears the method peeling off two-dimensional layer material Download PDFInfo
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Abstract
The invention provides a kind of convection gas and shear the method peeling off two-dimensional layer material, the shearing force that the method is produced by the cold and hot gas circulative convection of high pressure peels off two-dimensional layer material, and it comprises: first select two-dimensional layer raw material; The raw material chosen is joined in container, regulates the temperature difference at described container two ends to reach predetermined value; Gases at high pressure are sprayed in container, the horizontal shear force that described gases at high pressure circulative convection produces directly acts on two-dimensional layer raw material crystal face, is realized effective stripping of two-dimensional layer raw material layer and layer by the temperature difference and gas circulative convection time controlling described container.Compared with prior art, the present invention is by the cold and hot gas shear action of iterative cycles, and can generate the two-dimensional material of individual layer and minority layer as Graphene, its productive rate is up to more than 98%.The method technique is simple, is pure physical technology, decreases the destruction of production technology to two-dimensional layer inorganic material crystal structure to greatest extent.
Description
Technical field
The present invention relates to field of material preparation, particularly relate to a kind of convection gas and shear the method peeling off two-dimensional layer material.
Background technology
Thin layer Two-dimensional Inorganic material is emerging functional material in this century, comprises the graphene conductive material generated by graphite, the few layer semi-conducting material of the molybdenum bisuphide generated by molybdenum bisuphide, the few layer insulating materials of the boron nitride generated by boron nitride.Wherein, foremostly graphene conductive material is surely belonged to.
Graphene is the Core Feature material in this century.2010, Univ Manchester UK An Deliegaimu shared Nobel Prize in physics with Constantine doctor Nuo Woxiaoluofu because of the brilliance research in Graphene.Carry out two-dimensional graphene based on recent two decades, one dimension CNT, and the development and application of the novel carbon back functional material such as zero dimension carbon-60, scientific circles generally believe: " 20th century were centuries of silicon (Si), and 21 century will be century of carbon (C) ".
Due to the physical characteristic of above-mentioned excellence, graphene product range of application is wide.Comprise new forms of energy-Graphene ultracapacitor (specific energy >=85 watt-hour/kilogram), Graphene lithium battery, its discharge and recharge time shorten in minute, solar energy photovoltaic battery etc.; Radio frequency identification (RFID); Flexible electrode; Touch-screen; Special corrosion prevention film and corrosion resistant coating, electric wire and space flight and aviation composite etc.Graphene by the silicon materials of such as eighties of last century, in multi-field lifting people daily life quality.Such as collapsible bending mobile phone, computer and radio-frequency recognition system, electronic navigation integration, realize battery fast charging and discharging, again mobile phone of not worrying being away from home and do not have the situation of electricity, more convenient bring to the life of people.
The minority layer two-dimensional layer inorganic material such as Graphene can by oxidationreduction chemical method and mechanical stripping legal system standby.Wherein, oxidationreduction chemical method is Graphene preparation technology Chinese patent main at present: application number is 201110279522.6,201010548936.X, 201010606349.1 and 201110412972.8 etc.But chemical preparating process has Three Difficult Issues: the bottleneck of (a) output; (b) Heavy environmental pollution; C () production cost is high.It is 201110067543.1 that applicant have submitted Chinese Patent Application No. in March, 2010, the patent proposes a kind of technique utilizing supercritical peeling technology to prepare Graphene.This technique is that the molecule bonding force by vertically weakening Two-dimensional Inorganic material along Z-direction realizes layer-layer stripping.As a kind of physics lift-off technology, this technique solves a difficult problem for environmental pollution and volume production with adding.Recently, Chinese Patent Application No. is 201210226272.4 propose a kind of production technology utilizing supercritical fluid buck technology to peel off Two-dimensional Inorganic material, is also the method that molecule bonding force by vertically weakening Two-dimensional Inorganic material along Z-direction realizes layer-layer and peels off.But supercritical fluid chemical activity is comparatively strong, has certain destruction, thus have influence on the physical property of material to the crystal structure of material.Supercritical fluid has specific requirement to temperature, pressure simultaneously, limits the extension of production technology.
Summary of the invention
The object of the present invention is to provide a kind of convection gas to shear the method peeling off two-dimensional layer material, its technique is simple, stripping rate is high and environmental protection, the individual layer of described preparation and the physical property of minority layer two-dimensional material keep good.
For reaching aforementioned object, a kind of convection gas of the present invention shears the preparation method peeling off two-dimensional layer material, it is characterized in that: the shearing force that the method is produced by the cold and hot gas circulative convection of high pressure peels off two-dimensional layer material, and it comprises:
First two-dimensional layer raw material is selected;
The raw material chosen is joined in container, regulates the temperature difference at described container two ends to reach predetermined value;
Gases at high pressure are sprayed in container, the horizontal shear force that described gases at high pressure circulative convection produces directly acts on two-dimensional layer raw material crystal face, is realized effective stripping of two-dimensional layer raw material layer and layer by the temperature difference and gas circulative convection time controlling described container.
According to one embodiment of present invention, described two-dimensional layer raw material comprises graphite, molybdenum sulfide and boron nitride.
According to one embodiment of present invention, the purity of described two-dimensional layer raw material is greater than 99.5%, and described two-dimensional layer raw material is 50-300 orders.
According to one embodiment of present invention, the temperature difference at described container two ends is 50-500 DEG C.
According to one embodiment of present invention, the temperature difference at described container two ends is 200 DEG C.
According to one embodiment of present invention, described gas is at least the one in nitrogen, helium, carbon dioxide and oxygen.
According to one embodiment of present invention, the time of described gas circulative convection is below 2h.
Beneficial effect of the present invention: compared with prior art, the horizontal shear force that the present invention utilizes the cold and hot gas circulative convection of high pressure to produce acts on two-dimensional layer inorganic material as graphite, molybdenum sulfide, the planes of crystal such as boron nitride, the X-Y plane that this shearing force makes two dimensional crystal combine along its faint molecular link produces crystal face horizontal displacement and sliding motion, and then is peeled off by two-dimensional layer inorganic crystal material.By the cold and hot gas shear action of iterative cycles, can generate the two-dimensional material of individual layer and minority layer as Graphene, its productive rate is up to more than 98%.The method technique is simple, is pure physical technology, decreases the destruction of production technology to two-dimensional layer inorganic material crystal structure to greatest extent.Guarantee the crystal perfection of thin layer Two-dimensional Inorganic material, the physical characteristic of such material such as electric property and mechanical performance are not destroyed.Thus in follow-up application, the physical characteristic of its excellence is not fully exerted.
Accompanying drawing explanation
Fig. 1 is the filling structure schematic diagram of inventive container and two-dimensional layer raw material;
Fig. 2 is the flow chart of preparation process of the present invention;
Fig. 3 (a)-(c) is the shearing force schematic diagram of cold cycling gas in preparation process of the present invention;
Fig. 4 is the stereoscan photograph of Graphene prepared by the present invention;
Fig. 5 is the transmission electron microscope photo of Graphene prepared by the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Refer to Fig. 1, it is the filling structure schematic diagram of inventive container and two-dimensional layer raw material.One end of container 110 is provided with heater 120 as described in Figure 1, and container 110 other end is provided with cooling device 130, and container 110 side is provided with gas nozzle 140, and the top of described container 110 offers charging door 150.Wherein, described heater 120 is heated container 110 by heater strip, and described cooling device 130 is cooled container 110 by cooling water.In the present invention, heater 120 and cooling device 130 are all adjustable, to regulate the temperature difference of container 110.During use, two-dimensional layer raw material 160 is added container 110 from charging door 150, the temperature difference at container 110 two ends is regulated by described heater 120 and cooling device 130, gases at high pressure enter into described container 110 from described nozzle 140, the temperature difference due to container makes gases at high pressure produce shuttling movement fast, and two-dimensional layer raw material 160 shearing between layers realized in container 110 by the temperature difference and gas circulative convection time controlling described container is peeled off.In the present invention, the movement velocity of gases at high pressure in container 110 depends on the shape of described container and warm extent.
In the present invention, described two-dimensional layer raw material 160 is not limited only to graphite, molybdenum sulfide and boron nitride, can also be the material that other two-dimensional layers have plane of crystal.Shown below is the embodiment that convection gas shears the preparation method peeling off two-dimensional layer material.
The present invention combines with faint molecular force between the X-Y crystal face based on Two-dimensional Inorganic material, very easily produces horizontal displacement slippage along X-Y crystal face.The cold and hot gas of high pressure reciprocation cycle motion effect under, shearing force is continuously acted on the X-Y crystal face of Two-dimensional Inorganic material, makes it produce dislocation slippage, thus realize the mechanical stripping of Two-dimensional Inorganic material.
Embodiment 1
Refer to Fig. 2, it is the flow chart of preparation process of the present invention.As shown in Figure 2, convection gas of the present invention shears the method peeling off two-dimensional layer material, and it comprises the steps:
Step S1: select two-dimensional layer raw material.Such as select graphite raw material, purity can be selected to be greater than the crystalline flake graphite powder of 99.5%, and wherein the order number of graphite composite powder is between 50-300 orders.
Step S2: be packed into by the graphite composite powder chosen in container 110, wherein said container 110 is middle elevated temperature vessel.As shown in Figure 1, two-dimensional layer raw material is entered in container 110 by charging door 150.In this embodiment, what load in described container 110 is graphite composite powder.In other embodiment, this filling material can also be the material of molybdenum sulfide, boron nitride and other two-dimensional layered structures.
Step S3: the temperature difference that container is set.Please continue to refer to Fig. 1, first regulate heater 120 and the cooling device 130 at container 110 two ends, make the temperature difference at two ends in container 110 be adjusted to 50 DEG C.The present invention can arrange suitable temperature difference according to the shape of container.
Step S4: gas enters container by nozzle.Please continue to refer to Fig. 1, it is inner that gases at high pressure enter container 110 by the nozzle 140 of described container 110 side, and gases at high pressure form thermal current 170 and cold airflow 180 by the cooling of heater 120 heating and cooling device 130.Refer to Fig. 3 (a)-(c), it is the shearing force schematic diagram of cold cycling gas in preparation process of the present invention.As shown in Fig. 3 (a)-(c), thermal current and cold airflow due to the temperature difference existence so that produce shuttling movement fast, the cold and hot gas of Rapid Circulation will produce huge horizontal shear force, under the reciprocation cycle motion of the cold and hot gas of high pressure, this impact shear power directly acts on X-Y crystal face of graphite, wherein thermal current is in above graphite crystal face, cold airflow is in below graphite crystal face, layer winding is made to produce horizontal displacement and slippage, thus be stripped out from graphite surface, produce the Graphene of individual layer or minority layer.In this embodiment, the shuttling movement time of described cold and hot gas is 2h, and its movement velocity depends on the shape of container and warm extent.The gas used in the present invention is nitrogen, one or more mists in helium, carbon dioxide and oxygen.
S5: obtain grapheme material, enters next process and carries out quality testing, finished product packing.
Embodiment 2
The temperature difference at this embodiment container 110 two ends is as different from Example 1 100 DEG C, and the shuttling movement time of the cold and hot gas of high pressure is 2h, other identical with embodiment 1.
Embodiment 3
The temperature difference at this embodiment container 110 two ends is as different from Example 1 200 DEG C, and the shuttling movement time of the cold and hot gas of high pressure is 2h, other identical with embodiment 1.In this embodiment, the shearing force that described cold and hot gas shuttling movement produces can realize the Graphene stripping of 98%.Cover thickness is that the productive rate of the Graphene of individual layer reaches 30%, and the productive rate that cover thickness is the Graphene of 2-10 layers is 70%.
Embodiment 4
The temperature difference at this embodiment container 110 two ends is as different from Example 1 300 DEG C, and the shuttling movement time of the cold and hot gas of high pressure is 1h, other identical with embodiment 1.
Embodiment 5
The temperature difference at this embodiment container 110 two ends is as different from Example 1 500 DEG C, and the shuttling movement time of the cold and hot gas of high pressure is 0.5h, other identical with embodiment 1.
Parameter optimization of the present invention and experimental result are in table 1.
Table 1 is the property indices of the Graphene of the embodiment of the present invention.
| Parameter | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| The temperature difference (DEG C) | 50 | 100 | 200 | 300 | 500 |
| Circulation timei (h) | 2 | 2 | 2 | 1 | 0.5 |
| Stripping rate (%) | 90 | 95 | 98 | 97 | 96 |
Refer to Fig. 4 (a), Fig. 4 (b) and Fig. 5, it is respectively stereoscan photograph and the transmission electron microscope photo of Graphene prepared by the inventive method.As shown in Fig. 4 (a), Fig. 4 (b) and Fig. 5, two crystal structures of Graphene prepared by the inventive method are intact, and physical characteristic is excellent, essentially no crystal lattice damage.
The horizontal shear force that the present invention utilizes the cold and hot gas circulative convection of high pressure to produce acts on two-dimensional layer inorganic material as graphite, molybdenum sulfide, the planes of crystal such as boron nitride, the X-Y plane that this shearing force makes two dimensional crystal combine along its faint molecular link produces crystal face horizontal displacement and sliding motion, and then is peeled off by two-dimensional layer inorganic crystal material.By the cold and hot gas shear action of iterative cycles, can generate the two-dimensional material of individual layer and minority layer as Graphene, its productive rate is up to more than 98%.The method technique is simple, is pure physical technology, decreases the destruction of production technology to two-dimensional layer inorganic material crystal structure to greatest extent.Guarantee the crystal perfection of thin layer Two-dimensional Inorganic material, the physical characteristic of such material such as electric property and mechanical performance are not destroyed.Thus in follow-up application, the physical characteristic of its excellence is not fully exerted.
Above-mentioned explanation fully discloses the specific embodiment of the present invention.It is pointed out that the scope be familiar with person skilled in art and any change that the specific embodiment of the present invention is done all do not departed to claims of the present invention.Correspondingly, the scope of claim of the present invention is also not limited only to previous embodiment.
Claims (3)
1. convection gas shears the method peeling off two-dimensional layer material, it is characterized in that: the shearing force that the method is produced by the cold and hot gas circulative convection of high pressure peels off two-dimensional layer material, and it comprises:
Select raw material;
The raw material chosen is joined in container, regulates the temperature difference at described container two ends to reach predetermined value;
In container, spray into gases at high pressure, the horizontal shear force that described gases at high pressure circulative convection produces directly acts on raw material crystal face, is realized effective stripping of two-dimensional layer raw material layer and layer by the temperature difference and gas circulative convection time controlling described container,
Described raw material comprises graphite, molybdenum sulfide and boron nitride,
The temperature difference at described container two ends is 50-500 DEG C, and described gas is at least the one in nitrogen, helium, carbon dioxide and oxygen,
The time of described gas circulative convection is below 2h.
2. convection gas according to claim 1 shears the method peeling off two-dimensional layer material, and it is characterized in that: described graphite is graphite composite powder, and the purity of this graphite composite powder is greater than 99.5%, described graphite composite powder is 50-300 orders.
3. convection gas according to claim 1 shears the method peeling off two-dimensional layer material, it is characterized in that: the temperature difference at described container two ends is 200 DEG C.
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| CN103553030A (en) * | 2013-11-05 | 2014-02-05 | 中国石油大学(北京) | Preparation method of few-layer graphene |
| CN104495936A (en) * | 2014-12-12 | 2015-04-08 | 电子科技大学 | Preparation method of stratified molybdenum disulfide nano material |
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| CN105460931A (en) * | 2016-01-11 | 2016-04-06 | 王惠丽 | Method for preparing graphene through jet flow |
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| CN105800545B (en) * | 2016-03-18 | 2019-01-18 | 北京化工大学 | A method of removing preparation two-dimensional material |
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| WO2018064152A1 (en) * | 2016-09-30 | 2018-04-05 | The Regents Of The University Of California | Continuous production of exfoliated 2d layered materials by compressive flow |
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| CN107032336B (en) * | 2017-06-16 | 2018-03-13 | 成都新柯力化工科技有限公司 | The alternating electric field method that continuously stripping prepares graphene is utilized under a kind of dry powder state |
| CN107500281B (en) * | 2017-09-15 | 2020-10-13 | 北京师范大学 | Stripping method of two-dimensional material |
| CN111377436A (en) * | 2018-12-31 | 2020-07-07 | 浙江工业大学 | Gas-driven layered material stripping device and stripping method |
| CN110182783A (en) * | 2019-06-19 | 2019-08-30 | 侯梦斌 | A kind of carbon peel-off device and technique for intervening high-pressure jet ultrasound |
| CN111422858B (en) * | 2020-04-13 | 2022-11-08 | 鹤岗市振金石墨烯新材料研究院 | Method for efficiently preparing graphene |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59121920A (en) * | 1982-12-28 | 1984-07-14 | Toshiba Corp | Plane type convection heater |
| CN201458743U (en) * | 2009-04-03 | 2010-05-12 | 同济大学 | Interactive field device for stripping graphite oxide into functional graphene |
| CN102491314A (en) * | 2011-11-24 | 2012-06-13 | 中国科学院化学研究所 | Method for preparing graphene |
| CN102732966A (en) * | 2012-07-02 | 2012-10-17 | 上海交通大学 | Method for preparing two-dimensional atomic crystal new material by supercritical fluid |
| CN102765717A (en) * | 2012-08-14 | 2012-11-07 | 余美群 | Method for preparing graphene |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130022530A1 (en) * | 2011-07-19 | 2013-01-24 | Robert Angelo Mercuri | Production Of Exfoliated Graphite |
-
2013
- 2013-06-17 CN CN201310238984.2A patent/CN103350554B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59121920A (en) * | 1982-12-28 | 1984-07-14 | Toshiba Corp | Plane type convection heater |
| CN201458743U (en) * | 2009-04-03 | 2010-05-12 | 同济大学 | Interactive field device for stripping graphite oxide into functional graphene |
| CN102491314A (en) * | 2011-11-24 | 2012-06-13 | 中国科学院化学研究所 | Method for preparing graphene |
| CN102732966A (en) * | 2012-07-02 | 2012-10-17 | 上海交通大学 | Method for preparing two-dimensional atomic crystal new material by supercritical fluid |
| CN102765717A (en) * | 2012-08-14 | 2012-11-07 | 余美群 | Method for preparing graphene |
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